Tag: programming languages

Questions Related to programming languages

Which Built-In-Function will you use to achieve the following functionality?
technology programming languages

  1. %ABS

  2. %TRIM

  3. %TRIMS

  4. %UNS

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Correct Option: A

What are the values of NUM1 and NUM2 after executing the following code?
technology programming languages

  1. num1= -99999 num2= 999.99

  2. num1= 0 num2= 999.99

  3. num1= -99999 num2= 99999

  4. num1= 0 num2= 99999

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Correct Option: A

Identify the type parameter which can be used to use all numeric types in a generic call.
technology programming languages

  1. Integer

  2. Float

  3. Number

  4. Double

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Correct Option: C

Which one is the superclass of all generic objects?
technology programming languages

  1. >

  3. extends Object>

  4. None of these

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Correct Option: B

To create a public generic method named "update" that has no return type. In its argument list, the method accepts an argument named "updateValue" which is of the same type as the type parameter - T. Which is a valid declaration?
technology programming languages

  1. public T update()

  2. public void update(T updateValue)

  3. void update(T updateValue)

  4. public void update()

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Correct Option: B

Will it run without error: Thread th = new Thread(new Thread());
technology programming languages

  1. It will run without error

  2. Runtime Error

  3. Compilation Error

  4. None of all

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Correct Option: A

What is true
technology programming languages

  1. We can invoke run() method directly to start thread

  2. If we call start() method twice, two threads will be created

  3. t.sleep(50) - it will give minimum guarantee of at least 50ms this thread will not run

  4. Thread can be still alive even after the completion of run().

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Correct Option: C

When you create a thread instance the state will be
technology programming languages

  1. Ready

  2. Runnable

  3. New

  4. Waiting

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Correct Option: C

We can synchronize the variable to avoid race conditions.
technology programming languages

  1. True

  2. False

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Correct Option: B

If a thread goes to sleep in synchronized block. (Which one is false)
technology programming languages

  1. it is still alive

  2. It will release all hold locks

  3. It comes to runnable state after sleep time expired

  4. No other thread can enter into the synchronized.

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Correct Option: B